Permanent magnet synchronous motor with switchable N-T curves

Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)

Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto

Article type: Research Article

Authors: Niguchi, Noboru^* | Hirata, Katsuhiro | Morimoto, Eiki | Ohno, Yuki

Affiliations: Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, Osaka, Japan

Correspondence: [*] Corresponding author: Noboru Niguchi, Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, Japan. E-mail:noboru.niguchi@ams.eng.osaka-u.ac.jp

Abstract: This paper proposes a novel permanent magnet synchronous motor with switchable speed-torque (N-T) curves. The structure and operational principle of the proposed motor are described. The proposed motor can be rotated as 3-phase and 6-phase motors. First, the theoretical N-T characteristics using the torque constant and inductance that are computed by 2-D FEM analysis are calculated. Second, the 2 N-T characteristics are verified using FEM analysis under vector control. Finally, the advantages and disadvantages of the proposed motor are described.

Keywords: Permanent magnet motor, variable flux, 6-phase inverter, N-T curve, coupled analysis

DOI: 10.3233/JAE-162101

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 755-762, 2016